Display Panel Vibration Sound Generation Spacing Heat Shaking
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Solution Overview
Problem
Conventional display apparatuses face challenges in producing immersive sound experiences due to the placement of speakers, which hinder the viewer's immersion and are limited in design and space, especially when attempting to output low-frequency sounds without shaking the display panel and generating excessive heat.
Innovation Solution
A display apparatus with a sound generating module spaced apart from the rear surface of the display panel, utilizing a vibration generating device that includes a first and second sound generating module to output low and high-frequency sounds, respectively, and a vibration transmission member to direct vibrations to the rear, enhancing sound reproduction and control without a separate speaker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a speaker is installed in a display apparatus to output sound, then sound output function is improved, but the speaker occupies space and limits design freedom
Solution Approach 1:
The patent merges the sound output function with the display panel by making the display panel itself vibrate to produce sound. The vibration generating device is integrated with the display panel structure, eliminating the need for a separate speaker component while maintaining sound output capability.
Solution Approach 2:
The display panel serves dual functions: displaying images and generating sound through vibration. This multi-functionality approach allows the same component (display panel) to perform both visual and audio output, reducing overall device complexity.
2Ease of operation
If a speaker is installed to output sound toward the viewer, then sound directionality is improved, but the speaker must be placed at side or top/bottom ends instead of front or rear surfaces
Solution Approach 1:
Instead of placing a separate speaker at the front or rear surface to project sound directly toward the viewer, the patent inverts the approach by using the display panel itself as the sound source. The panel vibrates to generate sound that naturally propagates toward the viewer from the display surface position.
3Reliability
If the display panel is vibrated to output low frequency sound, then low frequency sound output is improved, but the display panel is severely shaken causing image shaking
Solution Approach 1:
The patent changes the vibration parameters by introducing a vibration generating device with controlled vibration characteristics. The device applies vibrations at frequencies and amplitudes optimized for sound generation while remaining below the threshold that causes visible panel shaking or image distortion.
4Reliability
If a vibration generating device is used to output low frequency sound, then low frequency sound output is improved, but excessive heat is generated affecting display panel lifetime
Solution Approach 1:
The patent introduces a vibration generating device as an intermediary component between the power source and the display panel. This intermediary efficiently converts electrical energy to mechanical vibration while minimizing heat generation, and its design allows for heat dissipation without transferring excessive heat to the display panel.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for improved sound quality and immersion by directing sound to the viewer while preventing panel shaking and heat transfer, expanding the reproducible low sound band and simplifying the output of low-frequency sounds, and enhancing design aesthetics by eliminating the need for a separate speaker.
Implementation Method 1
a vibration generating device vibrating the display panel
Implementation Method 2
a sound generating module spaced apart from a rear surface of the display panel
Data Source
AI summary
A display apparatus includes a display panel displaying an image, a rear cover supporting the display panel, and a vibration generating device vibrating the display panel. The vibration generating device includes a sound generating module spaced apart from a rear surface of the display panel. Accordingly, shaking of the display panel is prevented, and heat is prevented from being transferred to the display panel.